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A company has Azure virtual machines that need to download updates from specific external websites (e.g., *.microsoft.com and *.windowsupdate.com). The security team wants to centrally manage and allow outbound HTTPS traffic only to these FQDNs, while blocking all other outbound internet access. Which Azure networking service should they deploy to achieve this?

Question 1easymultiple choice
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A company has Azure virtual machines that need to download updates from specific external websites (e.g., *.microsoft.com and *.windowsupdate.com). The security team wants to centrally manage and allow outbound HTTPS traffic only to these FQDNs, while blocking all other outbound internet access. Which Azure networking service should they deploy to achieve this?

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Answer choices

Why each option matters

Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.

A

Best answer

Azure Firewall

Azure Firewall provides application rules that allow or deny outbound traffic based on FQDNs, making it the correct choice for this requirement.

B

Distractor review

Azure Application Gateway

Azure Application Gateway is a layer 7 load balancer and web application firewall for inbound HTTP/HTTPS traffic, not suitable for controlling outbound traffic from VMs.

C

Distractor review

Azure Front Door

Azure Front Door is a global load balancer and application delivery controller for inbound traffic, not designed to filter outbound traffic from Azure VMs.

D

Distractor review

Azure VPN Gateway

Azure VPN Gateway establishes secure encrypted tunnels between on-premises networks and Azure, but does not offer FQDN-based filtering for outbound traffic.

Common exam trap

Common exam trap: ACLs stop at the first match

ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.

Technical deep dive

How to think about this question

ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.

KKey Concepts to Remember

  • Standard ACLs match source addresses.
  • Extended ACLs can match source, destination, protocol and ports.
  • The first matching ACL entry is used.
  • There is usually an implicit deny at the end.

TExam Day Tips

  • Check inbound versus outbound direction.
  • Read the ACL from top to bottom.
  • Look for a broader permit or deny above the intended line.

Related practice questions

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More questions from this exam

Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.

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Question 2

A public web application should be protected from OWASP-style attacks and network-layer DDoS attacks. Which two Azure services are most relevant?

Question 3

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Question 4

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Question 5

A Sentinel watchlist contains high-value administrator accounts. Which KQL pattern best uses it in a detection rule?

Question 6

A SOC wants a Sentinel rule to include account, host, and IP entities so analysts can pivot during investigation. What should be configured in the analytics rule?

FAQ

Questions learners often ask

What does this AZ-500 question test?

Standard ACLs match source addresses.

What is the correct answer to this question?

The correct answer is: Azure Firewall — Azure Firewall supports application rules that can filter outbound traffic based on fully qualified domain names (FQDNs). This allows the security team to create allow rules for the required update domains and a default deny rule for all other outbound traffic. Azure Application Gateway and Azure Front Door are primarily inbound load balancers and web application firewalls, not designed for outbound FQDN filtering. Azure VPN Gateway is used for encrypted site-to-site or point-to-site connections, not for traffic inspection or filtering.

What should I do if I get this AZ-500 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.

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